Miller's Gold Chlorination process was introduced by F.B. Miller. The refining process employs chlorine gas, which passed into molten gold covered with a layer of borax and silica, and reacts with most of metals present in the molten charge.
How to Leach Gold Ore With Chlorination | Sciencing
How to Leach Gold Ore With Chlorination By Rebekah Smith; Updated April 25, 2017 Gold can be leached from stone through alkaline or acidic-based products, including halogens, such as chlorine, iodine and bromine.
Gold Extraction From Silica Chlorination - Arquers de la Vall
Industry News. The Chemistry of Gold Extraction (2nd edition) - 5-Chlorination 2716.2.1 Mechanism of Gold ...Silicates 4359.2.7 Process Considerations 4359.3...extraction of gold from the earth has been ...
US4353740A - Chlorine extraction of gold - Google Patents
A process for treating a particulated gold bearing ore to recover the gold therein is disclosed. The process includes roasting the ore to remove sulfides as sulfur dioxide followed by chlorination of the ore at a temperature of about 350° C. in the presence of iron to form a mixture of volatile gold chlorides and volatile gold-iron chlorides ...
The Newbery–Vautin chlorination process is a process to extract gold from its ore using chlorination developed by James Cosmo Newbery and Claude Vautin. Background. The process of extracting gold from ores by absorption of the precious metal in chlorine gas, from which it is reduced to a metallic state, is not a very new discovery.
Extraction of gold and silver in the selective chlorination ...
ABSTRACTThe selective chlorination of cyanidation tailing (CT) for the extraction of gold and silver has been investigated. The reaction operated at different conditions and their effect on the extraction of Au and Ag was studied.
Wendell Earl Dunn Jr. (August 30, 1922 – December 24, 2007) was an American chemical engineer, metallurgist, and inventor.His technologies for high temperature chlorination, gold, tantalum and titanium extraction are still widely used.
Gold extraction by chlorination using a pyrometallurgical process
Technical Note Gold extraction by chlorination using a pyrometallurgical process M.W. Ojedaa,*, E. Perinob, M. del C. Ruiza a Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, C.C. 290, 5700 San Luis, Argentina
extraction of gold by chlorination - greenmountainpta.org
extraction of gold by chlorination progresshighschool.co.in. 1899 Gold chlorination Scholars' Mine, Missouri, 1899 Gold chlorination Edwin Thompson Perkins, chlorination method of gold extraction However this was not the
Complete extraction of the gold by amalgamation is impossible, a part remaining in the mud of the stamp- mills. Concentration is effected by washing, and the " concentrates " are chlorinated by the Plattner process.
Synergistic extraction of gold from the refractory gold ore ...
A synergistic extraction method for gold from the refractory gold ores via ultrasound and chlorination-oxidation was developed. The effects of solid-liquid ratio, extraction time, ultrasound power, NaClO concentration and NaOH concentration on the extraction rate of gold from the refractory gold ore were investigated.
Gold extraction by chlorination using a pyrometallurgical ...
Request PDF on ResearchGate | Gold extraction by chlorination using a pyrometallurgical process | The feasibility to recover the gold present in alluvial material, by means of a chlorination process, using chlorine as a reactive agent, has been studied.
An average gold extraction yield of 94.9% was achieved at the outlet of the chlorination reactor with full environmental control over the residues and atmospheric emissions. The gold deposition yield was over 99.5%, leading to an overall gold extraction yield of 93.6% through the process.
CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF REFRACTORY ...
substitute for chlorine. For extraction of gold from the refractory ores in which gold is surrounded by sul-fide minerals, oxidative pretreatment of the ore is essential to oxidize the sulfides and expose gold. Pyrometallurgical oxidation by roasting is encountered with environmen-tal limitations; thus hydrometallurgical methods are preferred.